Joint for detachably connecting to one another the parts of wooden furniture and the like.



No. 892,165. 7 PATENTBD JUNE so, 1908.

' c. KUNGKOW & A. KRI'JGER. v JOINT FOR DETAOHABLY commune TO ONEANOTHER THE PARTS OF WOODEN FURNITURE AND THE LIKE.

APPLICATION FILED DEO.18,1907.

Fig.1. Fig.2 Fig.3. 1 1: 4.

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UNITED STATES PATENT OFFICE.

CARL KoNoxow AND AUGUST KRUGER, or KosLIN, GERMANY.

JOINT FOR DETACHABLY CONNECTING TO ONE ANOTHER THE PARTS OF WOODENFURNITURE AND THE LIKE.

Specification of Letters Patent.

Patented June 30, 1908.

Application filed December 13, 1907. Serial No. 406,318.

To all whom it may concern:

Be it known that we, CARL KoNcKow and AUGUST KRUGER, subjects of theKing of Prussia, German Emperor, and both residing at Koslin, in theProvince of Pomerania, Kingdom of Prussia, German Empire, have inventednew and useful improvements in joints for detachably connecting to oneanother the parts of wooden furniture and the like, such as the sidesand ends of wooden bedsteads, of which the following is a speciiication.

This invention relates to joints for detachably connecting to oneanother the parts of wooden furniture and the like, such as the ends andsides of wooden bedsteads' and consists in forming such joints ofsuitably recessed plates, which are adapted to be connected to oneanother by the insertion of two wedge shaped intermediate pieces.

This invention differs considerably from known devices designed for thepurpose. Firstly the plates to be used and screwed to the parts offrames to be connected to one another, are quite smooth so that no deeprecesses are required in the wooden parts. Further the plates and theintermediate connecting pieces are formed exactly similar to one anotherso that each intermediate piece fits into every recess in the plates andfinally the two halves of each intermediate piece are made exactlyuniform.

The advantages of the joints are that the plates are smooth withouthooks or projections which may easily break off and thus render the ointuseless, thus joints constructed according to this invention areextremely durable. The breaking off of the intermediate pieces used isquite obviated, even under rough treatment.

The intermediate pieces are constructed quite uniformly, both as regardsone to the other and the half of one piece to the other half, andtherefore they can be inserted into every hole of the plates Withoutregard to the position of their halves to the parts to be joined.

As in known arrangements with loose intermediate pieces the engagingparts are not wedge shaped in two directions but only in one direction,or are even formed essentially prismatic, the present invention has thefurther advantage that the parts are fixed quite automatically under theaction of the weight, further in the present construction the connectingand disconnecting of the parts is effected very easily and conveniently.And in order that this invention may be the better understood, we nowproceed to describe the same with reference to the accompanying drawingsand to the letters andfigures marked thereon.

Like letters refer to like parts in the various figures.

Figure 1 shows in elevation the two pieces of the joint ready mounted.Fig. 2 is a cor responding view with the upper plate removed. Fig. 3shows a transverse section on the line AB of Fig. 1. Fig. 4 shows alongitudinal section through Fig. 1. Figs. 5 and 6 are elevations of theplates from difierent sides. Fig. 7 shows three difierent projections ofthe connecting piece.

Plates 2 are screwed by screws 3 to wooden parts 1, to be connected toone another, see

ig. 4. It is preferred to let the plates into corres onding recesses inthe wooden parts. The p ates have recesses 4 one in the upper part andone in the lower part. These recesses are sufficiently large enough sothat the connecting pieces 5 can be inserted, and they are extended intowedge shaped slots 6. The latter are doubly wedge shaped, the side facesof the slots converging towards one end of the slot as well as towardsthe front face of the plate. The form of the connecting piecescorresponds with the before mentioned construction of the slots, Figs. 3and 7. These ieces 5 consist each of two Wedge shaped lialves formed inone piece, which are also wedge shaped in two directions as the slots inthe plates 2, i. 0. towards one end and towards one side surface; thetwo halves join on the smaller sides so that the narrower Wedge end issituated opposite to the broader one, and the halves may be somewhattransposed to each other in longitudinal direction.

A cross section through an intermediate piece I projecting half of theconnecting piece is I placed into the recess 4. When now the wooden partis lowered, the projecting part being screwed to the of the connectingpiece 5 passes into the wedge shaped slot 6 so that the parts areclamped together automatically.

The joining of the parts to be connected is greatly facilitated by theplates used being quite smooth without projections. The joint has thefurther advantage that any rocking or rattling of the arts connected toone another is quite obviated. The separate parts of the joint can bemade very cheaply.

WVe claim:

l. A joint for detachably connecting parts of wood to one anotherconsisting of smooth plates and loose connecting pieces, the former artsto be connected and provided with we ge shaped recesses one like theother partly rear-cut, and the latter being of double dovetail section,the two halves of which are wedge shaped in two directions and oin eachother by the narrower parts in such a manner that a broad wedge pieceseach having two wedge-shaped halves respectively adapted to cooperatewith the recesses of said plates.

CARL KONCKOXV. AUGUST KRUGER. Witnesses:

KURT SONNEMANN, EMIL KoTTERrTzson.

